睾丸性索-间质瘤MRI表现  

MRI manifestations of testicular sex cord-stromal tumor

作　　者：刘慧君[1] 寻静[1] 蒲迪 王科鑫 胡喜斌[1] 王唯伟 LIU Huijun;XUN Jing;PU Di;WANG Kexin;HU Xibin;WANG Weiwei(Department of Radiology,the Affiliated Hospital of Jining Medical University,Jining,Shandong Province 272029,China)

机构地区：[1]济宁医学院附属医院影像科,山东济宁272029

出　　处：《实用放射学杂志》2024年第5期752-755,共4页Journal of Practical Radiology

基　　金：济宁市重点研发计划项目(2021YXNS035);济医附院医学英才培养计划项目(2022-yxyc-010)。

摘　　要：目的探讨睾丸性索-间质瘤(TSCST)的MRI表现。方法回顾性分析12例经病理证实的TSCST的MRI及临床病理资料。结果12例均发生于单侧睾丸,其中10例呈结节状,1例呈不规则结节状,1例呈类圆形;12例病灶边界均清晰。T_(1)WI上,5例为均匀低信号,4例为等信号,2例为等/低混杂信号,1例为混杂高信号。T_(2)WI上,7例为均匀低信号,5例为混杂低信号。12例均行扩散加权成像(DWI)检查,并获取表观扩散系数(ADC);DWI上,10例为均匀低信号,2例为混杂低信号;12例ADC均为低信号,平均ADC值约(0.89±0.09)×10^(-3)mm^(2)/s。7例MRI增强扫描中5例为渐进性明显强化,1例病变呈瘤内分隔样强化,1例明显强化。结论TSCST的MRI表现具有一定的特征性,T_(2)WI、DWI及ADC均呈低信号,结合增强扫描病灶呈渐进性明显强化,有助于术前的准确诊断。Objective To explore the MRI findings of testicular sex cord-stromal tumor(TSCST).Methods TheMRI and clinicopathological data of 12 patients with TSCST proved by pathology were analyzed retrospectively.Results All 12 cases occurred in unilateral testicle,of which 10 cases were nodular,1 case was irregular nodular,and 1 case showed round shape.All 12 cases had clear boundaries.On T_(2)WI,5 cases showed homogeneous hypo-intensity,4 cases showed iso-intensity,2 cases showed inhomogeneous iso-intensity and hypo-intensity,and 1 case showed inhomogeneous hype-intensity.On T_(2)WI,7 cases were homogeneous hypo-intensity and 5 cases were inhomogeneous hypo-intensity.Diffusion weighted imaging(DWI)was performed in all 12 cases,and the apparent diffusion coefficient(ADC)was obtained.On DWI,10 cases showed homogeneous hypo-intensity,2 cases showed inhomogeneous hypo-intensity.All 12 cases showed hypo-intensity on ADC,with an average ADC value of approximately(0.89±0.09)×10^(-3)mm^(2)/s.Among the MRI contrastenhanced scans,5 cases showed progressive and obvious enhancement,1 case showed intratumoral septal enhancement,and 1 case showed obvious enhancement.Conclusion The typical MRI findings of TSCST are hypo-intensity on T_(2)WI,DWI,ADC,and the lesions show progressive and obvious enhancement,which are helpful for accurate preoperative diagnosis.

关 键 词：睾丸 睾丸性索-间质瘤 磁共振成像 

分 类 号：R737.21[医药卫生—肿瘤] R445.2[医药卫生—临床医学]